Re: Py_INCREF() incomprehension

From	Gregory Ewing <greg.ewing@canterbury.ac.nz>
Newsgroups	comp.lang.python
Subject	Re: Py_INCREF() incomprehension
Date	2011-05-02 10:48 +1200
Message-ID	<9266atF3vrU1@mid.individual.net> (permalink)
References	(4 earlier) <mailman.851.1303838890.9059.python-list@python.org> <ip70b8$3lv$1@r03.glglgl.eu> <mailman.858.1303843478.9059.python-list@python.org> <ip8pc1$qb8$1@r03.glglgl.eu> <mailman.1044.1304280052.9059.python-list@python.org>

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Hegedüs Ervin wrote:

> I've put it a Py_INCREF() after every PyModule_AddObject(), eg.:
> 
>     PyModule_AddObject(o, "error", cibcrypt_error_nokey);
>     Py_INCREF(cibcrypt_error_nokey);

That looks correct, because PyModule_AddObject is documented as
stealing a reference to the object.

By the way, it probably doesn't make a difference here, but
it's better style to do the Py_INCREF *before* calling
a function that steals a reference, to be sure that the
object can't get spuriously deallocated.

-- 
Greg

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Py_INCREF() incomprehension Ervin Hegedüs <airween@gmail.com> - 2011-04-26 11:48 +0200
  Re: Py_INCREF() incomprehension Thomas Rachel <nutznetz-0c1b6768-bfa9-48d5-a470-7603bd3aa915@spamschutz.glglgl.de> - 2011-04-26 14:23 +0200
  Re: Py_INCREF() incomprehension Thomas Rachel <nutznetz-0c1b6768-bfa9-48d5-a470-7603bd3aa915@spamschutz.glglgl.de> - 2011-04-26 14:21 +0200
    Re: Py_INCREF() incomprehension Hegedüs Ervin <airween@gmail.com> - 2011-04-26 16:03 +0200
      Re: Py_INCREF() incomprehension Thomas Rachel <nutznetz-0c1b6768-bfa9-48d5-a470-7603bd3aa915@spamschutz.glglgl.de> - 2011-04-26 18:08 +0200
        Re: Py_INCREF() incomprehension Hegedüs Ervin <airween@gmail.com> - 2011-04-26 19:28 +0200
          Re: Py_INCREF() incomprehension Thomas Rachel <nutznetz-0c1b6768-bfa9-48d5-a470-7603bd3aa915@spamschutz.glglgl.de> - 2011-04-26 19:45 +0200
            Re: Py_INCREF() incomprehension Hegedüs Ervin <airween@gmail.com> - 2011-04-26 20:44 +0200
              Re: Py_INCREF() incomprehension Thomas Rachel <nutznetz-0c1b6768-bfa9-48d5-a470-7603bd3aa915@spamschutz.glglgl.de> - 2011-04-27 11:58 +0200
                Re: Py_INCREF() incomprehension Hegedüs Ervin <airween@gmail.com> - 2011-05-01 22:00 +0200
                Re: Py_INCREF() incomprehension Gregory Ewing <greg.ewing@canterbury.ac.nz> - 2011-05-02 10:48 +1200
                Re: Py_INCREF() incomprehension Thomas Rachel <nutznetz-0c1b6768-bfa9-48d5-a470-7603bd3aa915@spamschutz.glglgl.de> - 2011-05-02 02:59 +0200
                Re: Py_INCREF() incomprehension Hegedüs, Ervin <airween@gmail.com> - 2011-05-02 08:41 +0200
                Re: Py_INCREF() incomprehension Stefan Behnel <stefan_ml@behnel.de> - 2011-05-02 09:07 +0200

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